Astronomy Test Review

What is Kepler's 1st law

• All the planets revolve around the sun in elliptical orbits having the sun at one of the foci

• A radius vector joining any planet to the Sun sweeps out equal areas in equal lengths of time.

• A planet's orbital period is proportional to the size of its orbit (its semi-major axis).

• Any particle of matter in the universe attracts any other with a force varying directly as the product of the masses and inversely as the square of the distance between them.

What's Kepler's 3rd law.

• All the planets revolve around the sun in elliptical orbits having the sun at one of the foci.

• A planet's orbital period is proportional to the size of its orbit (its semi-major axis).

• A radius vector joining any planet to the Sun sweeps out equal areas in equal lengths of time.

• Stored energy that depends upon the relative position of various parts of a system.

What's Kepler's 3rd law?

• All the planets revolve around the sun in elliptical orbits having the sun at one of the foci.

• A planet's orbital period is proportional to the size of its orbit (its semi-major axis).

• A radius vector joining any planet to the Sun sweeps out equal areas in equal lengths of time

What keeps the planets orbit?

• Planets buoyancy

• Planet's gravity

• Sun's gravity

• Sun's inertia

What's this Observatory

• Big Horn Medicine Wheel

• Stonehenge

• Machu Picchu

• Stonehedge

Stars stay in one place

• True

• False

Who are some ancient astronomers we discussed in class

• Ptolemy Aristotle George Bush Aristarchus Eratosthenes

• Ptolemy Aristarchus Pythagorus Eratosthenes

• Aristotle Apollo Ptolemy

• Ptolemy Aristotle Aristarchus Eratosthenes

What Ancient observatory is this?

• Bighorn Medicine Wheel

• Gaocheng

• Stonehedge

• Bighorn Medicine Dial

What's this ancient observatory?

• Stonehenge

• Machu Picchu

• Gaocheng

• Chichén Itzá

What did Newton invent/discover?

• The 4 moons on Jupiter

• Reflecting telescope

• Modern thermometer

• Gravitational waves